Change the way you hydrate with a bottle constructed from sustainable bamboo, natural cork and high quality 18/8 food-grade stainless steel. Double-walled vacuum insulation technology keeps drinks cold up to 24 hrs and hot up to 6 hrs. Each bottle is wrapped in a layer of non-slip, condensation-free cork to prevent drops and dents. No paint, no plastic and built to last a lifetime. This may be the only bottle you’ll ever need.